The SKLZ zip-N-Hit controlled pitch baseball batting trainer is the effectiveness of a batting cage but the convenience of a portable glove. With SKLZ zip-N-Hit . you can get batting practice with all types of pitches ranging from fastball to curveball. The SKLZ baseball batting trainer acts like a portable batting cage or pitching machine . allowing batters to improve their baseball swing almost anywhere . anytime. Get a better analysis of players stance . eye tracking and swing as they watch the ball come down the line. Coaches can full focus on their players technique without the fear of getting pegged by a fastball. Players have fun while developing confidence and power through this easy to use yet effective training aid. Not only that . the fun design makes it enjoyable for someone to pitch from the other end of the device . allowing for a fun game in the backyard or an intense one-On-One practice. SKLZ zip-N-Hit controlled pitch baseball batting trainer is an excellent way to safely build players baseball skills.